support no gemminis, trim debug prints

src/main/scala/radiance/memory/AlignFilterNode.scala

@@ -44,7 +44,7 @@ class AlignFilterNode(filters: Seq[AddressSet])(implicit p: Parameters) extends
     val addresses = seq.flatMap(_.slaves.flatMap(_.address))
     val unifiedAddressRange = addresses.flatMap(_.toRanges).sorted.reduce(_.union(_).get)
     assert(isPow2(unifiedAddressRange.size))
-    println(s"$name address range ${unifiedAddressRange}")
+    // println(s"$name address range ${unifiedAddressRange}")
     seq.head.v1copy(
       responseFields = BundleField.union(seq.flatMap(_.responseFields)),
       requestKeys = seq.flatMap(_.requestKeys).distinct,

src/main/scala/radiance/memory/DistributorNode.scala

@@ -13,7 +13,7 @@ import org.chipsalliance.diplomacy.lazymodule._
 
 class DistributorNode(from: Int, to: Int)(implicit p: Parameters) extends LazyModule {
   require(isPow2(from) && isPow2(to) && (from >= to), "invalid distributor node parameters")
-  println(s"distributor node to segment from $from into $to")
+  // println(s"distributor node to segment from $from into $to")
   val numClients = from / to
 
   val node = TLNexusNode(clientFn = seq => {
@@ -54,13 +54,13 @@ class DistributorNode(from: Int, to: Int)(implicit p: Parameters) extends LazyMo
   lazy val module = new LazyModuleImp(this) {
     val cn = node.in.head._1
     val mn = node.out.map(_._1)
-    println(f"$name node in size ${node.in.size}, out size ${node.out.size}")
+    // println(f"$name node in size ${node.in.size}, out size ${node.out.size}")
     assert(node.out.size == numClients, s"got ${node.out.size} clients instead of $numClients")
 
     // A channel
     val ca = cn.a.bits
     mn.map(_.a.bits).zipWithIndex.foreach { case (m, i) =>
-      println(s"$i master source id width ${m.source.getWidth}, client source id width ${ca.source.getWidth}")
+      // println(s"$i master source id width ${m.source.getWidth}, client source id width ${ca.source.getWidth}")
       m.opcode := ca.opcode
       m.param := ca.param
       m.user := ca.user

src/main/scala/radiance/memory/RWSplitterNode.scala

@@ -26,7 +26,7 @@ class RWSplitterNode(visibility: Option[AddressSet], override val name: String =
       val visibilities = seq.flatMap(_.masters.flatMap(_.visibility))
       val unified_vis = if (visibilities.map(_ == AddressSet.everything).reduce(_ || _)) Seq(AddressSet.everything)
         else AddressSet.unify(visibilities)
-      println(s"$name has input visibilities $visibilities, unified to $unified_vis")
+      // println(s"$name has input visibilities $visibilities, unified to $unified_vis")
 
       seq.head.v1copy(
         echoFields = BundleField.union(seq.flatMap(_.echoFields)),

src/main/scala/radiance/tile/RadianceCluster.scala

@@ -98,8 +98,10 @@ class RadianceClusterModuleImp(outer: RadianceCluster) extends ClusterModuleImp(
     g.cmd.valid := VecInit(active).reduceTree(_ || _)
   }
 
+  if (gemminiAccs.nonEmpty) {
     // this might need some more tweaking (e.g. bitmask instead of or)
     coreAccs.foreach(_.status := VecInit(gemminiAccs.map(_.status)).reduceTree(_ | _))
+  }
 
   (outer.traceTLNode.in.map(_._1) zip outer.traceTLNode.out.map(_._1)).foreach { case (i, o) =>
     o.a <> i.a

src/main/scala/radiance/tile/VirgoSharedMemComponents.scala

@@ -96,9 +96,13 @@ class VirgoSharedMemComponents(
         }
         Seq.fill(smemWidth / spWidthBytes)(fanout).flatten // smem wider than spad, duplicate masters
       }
+      if (nodes.isEmpty) {
+        Seq.fill(smemSubbanks)(Seq())
+      } else {
         // (gemmini, word) => (word, gemmini)
         wordFanoutNodes.transpose
       }
+    }
 
     // (banks, subbanks, gemminis)
     val spadReadNodes = Seq.fill(smemBanks)(distAndDuplicate(gemminis.map(_.spad_read_nodes), "r"))